7x+x=-3x

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Solution for 7x+x=-3x equation: 



7x+x=-3x

We move all terms to the left:

7x+x-(-3x)=0

We add all the numbers together, and all the variables

8x-(-3x)=0

We get rid of parentheses

8x+3x=0

We add all the numbers together, and all the variables

11x=0

x=0/11

x=0

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